Isaac, I went through almost the same mod path you are doing, and had the same problems. As soon as you raise the boost and start to push the ecu, save for a good replacement. As you know, I went for the Haltech E11V2 and it is worth every cent!! Any problems are easily diagnosed via laptop and changed easily as well. Lots more fuel mapping points than the Power FC too so it is a smooth power curve!! The strangest result was that the car has 40 more rwkw but is 3 decibels quieter!!